What are the pictures and parameters of halogen-free solder paste like?

Parameters of leaded solder paste:

There is lead solder pasteIt's becoming more and more comprehensive, and there are no problems with the welding. It is generally used for wireless network cards.DVDMid-to-high-end electronic products such as mobile phones, refrigerators, air conditioners, high-frequency heads, security products, and computersSMTProcess. It has a simple and elegant appearance, stable and durable quality, and is a product with a relatively high level of appearance.